What is the function of trap flag in 8086 microprocessor?

what is the function of trap flag in 8086 microprocessor?


  • swati verma
    swati verma
    Trap flag when set then single step interrupt will occur after the next instruction.
  • Trieu Vi Nguyen
    Trieu Vi Nguyen
    how to enable Trap flag? which instruction can do that?
  • rahul69
    #-Link-Snipped-# There is no specific instruction to set Trap flag. However, u can set it by changing the Trap Flag Bit of the flags register.
    Also, The Trap Flag is mainly used for debugging purposes.
    Hope it helps!!!
  • simplycoder
    Trap Flag

    amazingly explained.
  • Ankita Katdare
    Ankita Katdare
    More amazingly, this thread has thousands of views. It only goes to say engineers are searching for the basics and CE is providing them the answers. 👍

    So, here's my two cents:
    Trap Flag is used for on-chip debugging. Debuggers can use it for step-by-step execution of a computer program. If 8086 does a type-1 interrupt, Trap Flag is reset. Therefore, the single-step mode will be disabled during the interrupt-service procedure.
  • Shanu Verma
    Shanu Verma

    will any geek tell me what the hell on earth single step execution means ?

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